崩溃，犯罪现场纠正了Leica BLK3D

Working with prosecutor offices and defense attorneys in Italy and across Europe, I conducted countless hours of forensic mappings of crash, collision, traffic accident and crime scenes. I led investigations and provided reconstruction services.

我理解的程序和挑战working, documenting and measuring a collision or a crime scene, as well as collecting evidence. Based on my close work with different law enforcement agencies and court experts worldwide over the last decades, I understand, that adopting the best technology with an easy and validated methodology can be of a great help to document an event, especially when the evidence collected is a fundamental part of a criminal or civil court hearing.

很多时候，在场景上，为了理解和细节水平，我本来可以使任务更快，更安全，更有效地使用手持技术来记录和收集证据。幸运的是，今天，Leica BLK3D实时的，图3D测量解决方案可确保在现场最短的时间内整体收集证据以提高安全性。

Simply create deliverable data

BLK3D用图片记录了场景。它还允许从图像中提取所需的测量结果，在最短的时间内运行，同时确保现场人士的安全。

The device runs the BLK3D enhanced software capability on an Android platform, and it's possible to measure directly on display in a matter of seconds. After collecting the evidence, you can send a comprehensive report to the supervisor or to the remote office. Just following an easy, intuitive and validated procedure, there is no more need to perform hand measurements, "bending on the road" to extend a tape and使操作员面临不必要的风险。

使用BLK3D，捕获的每个图像都是完整而精确的3D测量记录。后来，在清除场景并且不再有可能重新访问之后，可以从及时冻结现场的图像中提取确切的度量信息，而不会丢失任何细节。

使用紧凑的，多合一的摄影测量工具，您可以：

• 用图像记录场景和证据

The BLK3D combines a calibrated stereo camera, measurement sensors, software, and on-device edge detection capabilities to make in-picture measurements with professional-grade accuracy. Every image captured is a complete and precise 3D measurement record.

• 在碰撞场景上获取测量
  Designed to make your measurements faster and easier, you can measure directly within any picture you can capture with the BLK3D. It will help you fully document your work, including as-built conditions and project progress.

• 用至少2D缩放的事故现场完成报告
  Easy as it is, just take images and notes and leave the scene. The technology of the BLK3D, allows you to use the BLK3D handheld device to document the scene with extractable measurements of the required metrics data regarding the crash scene like, objects, landmarks, evidence, vehicles, etc.

只需创建碰撞场景的缩放2D图

There are many ways to deliver a 2D drawing of the incident scene. For instance, the BLK3D includes the laser measurement capability (like Disto™) to acquire point-to-point measurements. With an adaptor, the BLK3D can be used as a kind of "mini total station" to export the data to your CAD-based software.

We all agree that it is crucial to document as many details as possible on the accident scene in the shortest possible time. Due to the technical abilities and time restrictions on site, a point-to-point method can force the investigator to select just some main evidence and points while neglecting others.

Working with the third-part software for the rectification of photographs,PC-Rect，让我们看一下如何创建此2D图。

该软件允许用户纠正接近平面的表面照片，例如事故场景中的道路表面。由于纠正的结果，创建了表面正常的图像视图（水平表面的计划视图）。即使在事件发生时未进行测量，重建主义者也可以获得足够的尺寸数据以纠正照片。

BLK3D的独特功能使用户可以从设备的摄影测量测量中提取彩绘线，标记或其他持久的道路特征，这些路口出现在原始照片中。我已经进行了一些测试，比较了使用BLK3D和PC-rect的结果以及使用Leica BLK360成像激光扫描仪进行的一些测量结果。结果总结如下：

• 没有重大错误
  According to the conditions and methodology of this experiment, in the test scenario, results have shown no significant errors between distances readable from the BLK3D and distances readable from the BLK360 using theLeica JetStream Viewer。

• 匹配的准确性
  The same grade of accuracy applies to the measurement taken on the PC-Rect image (view normal to the surface) as a result of the rectification, a process using the BLK3D and PC-RECT software.

• 可接受的准确性
  该实验还显示了有关证据，细节和尺寸数据的2D缩放图像的尺寸数据的可接受的准确性等级。

事故调查和事件重建是轻松的，而无需使用BLK3D牺牲准确性。借助全球验证的事故调查软件，例如PC-RECT，该领域是探索的主要内容。

有关测试结果以及有关事故和碰撞调查工具的更多信息，联系我们。

作为一名长期的法医专家，以及在欧洲认可的第一位Actar（交通事故重建主义者认证委员会）专家，重点是犯罪和坠机场景法医映射和交通事故重建，Ivan Macella（Beng。，Actar）是法医业务发展manager for Hexagon’s Geosystems division in Europe.